IP Library › Patent Application 10069888
Patent Application Utility PCT National Stage
App. No. 10/069,888 · Confirmation No. 3876

PRODUCTION OF DIBENZOSUBERENONE DERIVATIVES BY CATALYTIC DEHYDROGENATION

Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗
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2002-02-26 LET. Miscellaneous Incoming Letter 26 View
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Quick Facts
App. No.
10/069,888
Filed
2002-02-26
Granted
2003-09-09
Art Unit
1692
PTA
-72 days